• 한국전통조경학회지
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• 제34권4호
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• pp.37-50
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• 2016

창옥병의 지명 오류에 대한 문제의식을 바탕으로 고지도, 옛시문, 옛그림 등의 문헌자료조사와 암각 및 조망특성에 대한 현장조사 그리고 인터뷰를 통해 창옥병의 위치를 비정하고, 이곳의 향유주체인 사암 박순과 그가 경영한 배견와 및 별업 이양정의 공간 구조와 정원적 면모를 고찰한 결과는 다음과 같다. 창옥병은 옥병서원과 일체감을 갖는 공간역으로 옛그림과 고지도 그리고 암각문의 존재로 볼 때 옥병서원 바로 앞의 석벽임을 추정할 수 있다. 이 지역과 현재 창옥병으로 알려진 오가리석벽과는 직선거리로 불과 약 460m거리에 위치하고 있어 광의의 창옥병 경관영향권으로 볼 수 있다. 시문에 등장하는 "창옥병급산금(蒼玉屛及散襟)"이란 표현에서도 산금대라 암각된 병풍바위가 바로 협의의 창옥병임이 유추된다. 또한 오가리석벽에서는 단 1점의 암각도 확인되지 않는 반면 옥병서원 전면부 암벽 도처에는 사암 박순이 명명하고 주문하여 새긴 11개소의 암각 중 8개의 경물명과 제영시가 필첩(筆帖)처럼 밀집되어 있음은 옥병서원 앞의 강벽(江壁)이 의심할 여지없는 창옥병인 것으로 비정된다. '수월정신송균절조(水月精神松筠節調)'암각은 창옥병의 향유주체였던 사암의 고매한 인격과 덕행을 함축하는 창옥병의 상징언어이자 이곳의 장소 요체(要諦)로, 기존 알려진 것과는 달리 우암 송시열의 필적으로 바로잡아야 한다. 한편 사암의 정원유적 창옥병은 왼쪽으로부터 산금대-수경대-청학대-백학대의 4개 대로 구성되어 있다. 산금대 후면에는 본제인 배견와를, 백학대 좌측의 기암석벽 위에는 별업 이양정을 조성하여 멀리 오가리석벽의 장관(壯觀)을 관망하는 조망구도를 갖도록 계획되었다. 사대(四臺)) 좌측 가장 높은 곳에 입지한 이양정은 사암의 별업이자 독서처이자 장구지소(杖屨之所)이며 그 앞 너럭바위에 존재하는 와준(窪樽)은 사암의 술풍류를 반영한 정원시설로 비정된다.

• 생약학회지
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• 제29권1호
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• pp.35-39
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• 1998

The famous prescription of So Cheong Ryong Tang (小靑龍湯)in Chinese herb medicine, which has been used for the treatment of common cold, influenza, asthmatic bronchitis, and bronchial asthma and, is being commercially produced in the form of decoction. However, the storage problem for this dosage form remains unsettled. The quantitative changes of the major constituents, at different temperature and time course, were examined employing HPLC and GC. Cinnamaldehyde, cinnamic acid, ephedrine, albiflorine, paeoniflorin, benzoic acid, glycyrrhizin, and liquiritin were choosen as phytochemical markers. The content of cinnamaidehyde significantly decreased when stored at increased temperature, while that of benzoic acid has increased. By overall consideration of the present experimental data, it was suggested that most constituents are considerably stable when preserved below freezing temperature.

• Molecules and Cells
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• 제43권7호
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• pp.645-661
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• 2020

Leaf senescence is a developmental process by which a plant actively remobilizes nutrients from aged and photosynthetically inefficient leaves to young growing ones by disassembling organelles and degrading macromolecules. Senescence is accelerated by age and environmental stresses such as prolonged darkness. Phytochrome B (phyB) inhibits leaf senescence by inhibiting phytochrome-interacting factor 4 (PIF4) and PIF5 in prolonged darkness. However, it remains unknown whether phyB mediates the temperature signal that regulates leaf senescence. We found the light-activated form of phyB (Pfr) remains active at least four days after a transfer to darkness at 20℃ but is inactivated more rapidly at 28℃. This faster inactivation of Pfr further increases PIF4 protein levels at the higher ambient temperature. In addition, PIF4 mRNA levels rise faster after the transfer to darkness at high ambient temperature via a mechanism that depends on ELF3 but not phyB. Increased PIF4 protein then binds to the ORE1 promoter and activates its expression together with ABA and ethylene signaling, accelerating leaf senescence at high ambient temperature. Our results support a role for the phy-PIF signaling module in integrating not only light signaling but also temperature signaling in the regulation of leaf senescence.

• 대한방사성의약품학회지
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• 제6권2호
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• pp.102-115
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• 2020

In the state of Positronium (Ps), which is an unstable material created by the temporary combination of electrons and positrons, the imaging technology through photo-conversion methodology is emerging as a new research theme under resonance conditions through terahertz electromagnetic waves. Normally, Positronium can be observed in the positron emission computed tomography (PET) process when an unstable, separate state that remains after the pair annihilation of an electron and a positron remains. In this study, terahertz (THz) waves and Cherenkov radiation (CR) are generated using the principle of ponderomotive force in the plasma wake-field acceleration, and electrons and positrons are simultaneously generated by using a relativistic electron beam without using a PET device. We confirm the possibility of Positronium photoconversion technology in terahertz electromagnetic resonance conditions through experimental studies that generate an unstable state. Here, a relativistic electron beam (REB) energy of 0.5 MeV (γ=2) was used, and the terahertz wave frequencies is G-band. Meanwhile, a THz wave mode converting three-stepped axicon lens was used to apply the photoconversion technology. Through this, light emission in the form of a luminescence-converted Bessel beam can be verified. In the future, it can be used complementarily with PET in nuclear medicine in the field of medical imaging.

• 동의생리병리학회지
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• 제16권1호
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• pp.181-185
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• 2002

The thrombosis is the category of blood stasis. Blood stasis is a pathologicial state resulting from the reverse or impeded flow of blood in the body or the stagnation of blood flow in local parts as well as abnormal blood outside of the vessles which remains in the body and fails to disperse. Hwao-tang has been reported to have a hypolipidemic effect in patients with hypercholesterolemia, and in highcholesterol-induced experimental models. The present paper reports the effects of HOT on atherosclerosis using a spontaneous experimental model, Kurosawa and Kusanagi-hypercholesterolemic (KHC) rabbits. We have also investigated the pharmacological effect of extracts obtained from HOT on collagen-and ADP-induced blood platelet aggregation, thrombin-induced conversion of fibrinogen and fibrinolysis in in vitro experiments. In conclusion, the protection of extracts of Korean herbs' HOT on the ischemic infarction induced artificially might be involved to their inhibition of thrombotic action.

• BMB Reports
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• 제51권8호
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• pp.418-423
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• 2018

Emergency granulopoiesis is a very important strategy to supply efficient neutrophil number in response to infection. However, molecular mechanism involved in this process remains unclear. Here, we found that administration of WKYMVm, an immune modulating peptide, to septic mice strongly increased neutrophil number through augmented emergency granulopoiesis. WKYMVm-induced emergency granulopoiesis was blocked not only by a formyl peptide receptor 2 (FPR2) antagonist (WRW4), but also by FPR2 deficiency. As progenitors of neutrophils, $Lin^-c-kit^+Sca-1^-$ cells expressed FPR2. WKYMVm-induced emergency granulopoiesis was also blocked by a phospholipase C inhibitor (U-73122). These results suggest that WKYMVm can stimulate emergency granulopoiesis via FPR2 and phospholipase C enzymatic activity.

• 대한족부족관절학회지
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• 제16권2호
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• pp.73-78
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• 2012

Severe ankle sprain secondarily leads to chronic lateral ankle instability in 20-30%. Many surgical procedures have been presented for reconstruction of the lateral ankle instability, but controversy still remains for the ideal surgical option. Br$\ddot{o}$strom procedure or its modifications have been widely used but they have some limitations for the instabilities for the over-weight, physically high demanding patients and especially for significantly deficient or attenuated ligaments. Moreover the tenodesis procedures using peroneus brevis tendon are non-anatomical and sacrifice important lateral stabilizing tendon. Therefore recently, many reconstructive procedures for lateral ankle instability utilizing free allograft or autograft tendon have been introduced to anatomically stabilize the lateral ligaments to various degrees.

• 한국동물번식학회:학술대회논문집
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• 한국동물번식학회 2004년도 춘계학술발표대회
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• pp.187-187
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• 2004

Gene delivery is one of the keen interests in animal industry as well as research on gene function. Some of the in vivo gene delivery techniques have been successively used in various tissues for the gene therapy and transgenesis. Despite intensive efforts, it still remains to overcome problems of limited local and regional administration and low transgene expression. (omitted)

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2004년도 춘계 학술발표회 제16권1호
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• pp.380-383
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• 2004

The coarse and fine aggregates that make up the majority of concrete are resources. But, the raw naturals that make up concrete are our earth's resources and there is not a replenishable stock. Also industrial waste and life waste leaped into a pollution source. Therefore, as construction continue, quarries are exhausted and new sources must be discovered. The purpose of this paper is to investigate an application of recycled coal ash plastics in the construction field. The study examined the physical and mechanical properties of recycled coal ash plastics aggregate. In the results, although the absorption and specific gravity of SLAs increases slightly as the fly ash content increases, the compressive strength and modulus of elastic of concrete made with SLAs remains relatively constant when mortar type and volume fraction are also held constant. These values are always lower than natural-weight aggregate concretes.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2003년도 추계학술대회 논문집 전기물성,응용부문
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• pp.9-11
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• 2003

Image sticking, the phenomenon that the previously displayed pattern still remains after the image is changed into different image, is one of the most serious problem in realizing high picture quality. There are various methods decreasing the image sticking phenomenon. In this paper, we have tried to decrease boundary image sticking by reducing the discharge concentration phenomenon in the boundary of pattern using the new driving method that is applied to bias in the address electrode.